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Effect of Heat Treatment on Plasma-Sprayed Mo-Based Amorphous and Nanocrystalline Coating

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In this paper, Mo-based amorphous and nanocrystalline coatings were prepared on 45 steel by air plasma spraying. Effect of heat treatment on phase structure, micro-hardness, and wear behavior was investigated. The experimental results showed that the content of amorphous within the coating reduced with the increasing of heat treatment temperature. The amorphous phase transform into nanocrystalline in the fist step. Then the nanocrystalline becomes much bigger with the heat treatment temperature increasing. The maximum hardness appeared in the coatings heat-treated at 750 °C due to high content amorphous phase turn into nanocrystalline. Wear was demonstrated qualitatively by scanning electron microscope. The coating shows high wear resistance than iron substrate.
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Keywords: AMORPHOUS; COATING; HEAT TREATMENT; NANOCRYSTALLINE; PLASMA SPRAYING

Document Type: Research Article

Publication date: September 1, 2012

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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